EP 4099034 A4 20231011 - RELAY DIAGNOSIS DEVICE, RELAY DIAGNOSIS METHOD, BATTERY SYSTEM, AND ELECTRIC VEHICLE
Title (en)
RELAY DIAGNOSIS DEVICE, RELAY DIAGNOSIS METHOD, BATTERY SYSTEM, AND ELECTRIC VEHICLE
Title (de)
RELAISDIAGNOSEVORRICHTUNG, RELAISDIAGNOSEVERFAHREN, BATTERIESYSTEM UND ELEKTRISCHES FAHRZEUG
Title (fr)
DISPOSITIF DE DIAGNOSTIC DE RELAIS, PROCÉDÉ DE DIAGNOSTIC DE RELAIS, SYSTÈME DE BATTERIE ET VÉHICULE ÉLECTRIQUE
Publication
Application
Priority
- KR 2021013269 W 20210928
- KR 20200133688 A 20201015
Abstract (en)
[origin: EP4099034A1] A relay diagnosis apparatus according to the present disclosure includes a first voltage detection circuit to generate a first diagnosis voltage at a voltage between a positive electrode terminal of a battery assembly and a chassis; a second voltage detection circuit to generate a second diagnosis voltage at a voltage between a negative electrode terminal of the battery assembly and the chassis; and a controller to determine a first insulation resistance between the positive electrode terminal and the chassis and a second insulation resistance between the negative electrode terminal and the chassis based on the first diagnosis voltage at a first time point and the second diagnosis voltage at a second time point while the first relay and the second relay are being controlled into an off-state. The controller determines a third insulation resistance between the positive electrode terminal and the chassis and a fourth insulation resistance between the negative electrode terminal and the chassis based on the first diagnosis voltage at a third time point and the second diagnosis voltage at a fourth time point while the first relay and the second relay are being controlled into an on-state. The controller detects a fault of at least one of the first relay or the second relay based on the first to fourth insulation resistances.
IPC 8 full level
G01R 31/327 (2006.01); B60L 3/00 (2019.01); B60L 58/18 (2019.01); G01R 31/52 (2020.01)
CPC (source: EP KR US)
B60L 3/00 (2013.01 - US); B60L 3/0023 (2013.01 - EP); B60L 3/0046 (2013.01 - KR); B60L 58/18 (2019.01 - KR); G01R 15/04 (2013.01 - KR); G01R 27/025 (2013.01 - KR); G01R 31/1227 (2013.01 - US); G01R 31/3272 (2013.01 - KR US); G01R 31/3278 (2013.01 - EP); G01R 31/392 (2018.12 - KR); G01R 31/66 (2020.01 - KR); B60L 2240/527 (2013.01 - EP); B60L 2240/547 (2013.01 - EP); B60Y 2306/15 (2013.01 - KR); G01R 31/52 (2020.01 - EP); Y02T 10/70 (2013.01 - EP KR)
Citation (search report)
- [XY] US 2020049768 A1 20200213 - MATSUKAWA KOJI [JP], et al
- [Y] US 2017227589 A1 20170810 - KAWANAKA SHOTA [JP], et al
- See references of WO 2022080709A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4099034 A1 20221207; EP 4099034 A4 20231011; CN 115136016 A 20220930; JP 2023511169 A 20230316; JP 7416488 B2 20240117; KR 20220049950 A 20220422; US 11774499 B2 20231003; US 2023099667 A1 20230330; WO 2022080709 A1 20220421
DOCDB simple family (application)
EP 21880357 A 20210928; CN 202180015610 A 20210928; JP 2022544363 A 20210928; KR 20200133688 A 20201015; KR 2021013269 W 20210928; US 202117798151 A 20210928